<template>
<div class="login_container">
    <div class="login_box">
        <div class="avatar_box">
            <img src="../assets/logo.png" alt />
        </div>
        <el-form ref="loginFormRef" :model="loginForm" :rules="rules" label-width="0" class="login_form">
            <el-form-item prop="username">
                <el-input v-model="loginForm.username" prefix-icon="el-icon-user-solid"></el-input>
            </el-form-item>
            <el-form-item prop="password">
                <el-input v-model="loginForm.password" prefix-icon="el-icon-lock" type="password"></el-input>
            </el-form-item>
            <el-form-item class="btns">
                <el-button type="primary" @click="login">登录</el-button>
                <el-button type="info" @click="resetLoginForm">重置</el-button>
            </el-form-item>
        </el-form>
    </div>
</div>
</template>

<script>
export default {
  data () {
    return {
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      rules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 5, message: '长度在 3 到 5 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 3, max: 15, message: '长度在 3 到 15 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    resetLoginForm () {
      this.$refs.loginFormRef.resetFields()
    },
    login () {
      this.$refs.loginFormRef.validate(async valid => {
        if (!valid) { return }
        const { data: res } = await this.$http.post('login', this.loginForm)
        if (res.meta.status !== 200) return this.$message({ showClose: false, message: '登录失败', type: 'error', duration: 1000 })
        this.$message({ showClose: false, message: '登录成功', type: 'success', duration: 1000 })
        window.sessionStorage.setItem('token', res.data.token)
        this.$router.push('/home')
      })
    }
  }
}
</script>

<style lang="less" scoped>
.login_container {
    background-color: aqua;
    height: 100%;
}

.login_box {
    width: 450px;
    height: 300px;
    background-color: #ffffff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}

.avatar_box {
    height: 130px;
    width: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;

    img {
        width: 100%;
        height: 100%;
        background-color: #eee;
        border-radius: 50%;
    }
}

.btns {
    display: flex;
    justify-content: flex-end;
}

.login_form {
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
}
</style>
